DIY Furnace Repair | St. Louis HVAC Tips

Furnace troubles can be stressful, especially during the colder months. When your heating system isn’t working correctly, you might wonder if you can tackle the issue yourself. While some minor problems can be addressed with DIY furnace repair, many issues require professional expertise to ensure safety and proper functionality. This guide explores when it’s safe to repair your furnace, step-by-step instructions for simple fixes, and why some tasks should be left to the experts.

To learn more or schedule professional furnace repair services in St. Louis and the surrounding areas, contact the experts at Galmiche & Sons today.

Understanding DIY Furnace Repair: What Can You Handle?

Before grabbing your toolbox, it’s important to understand which common furnace repairs you can safely manage and which require professional assistance. Attempting to fix complex issues without proper knowledge can result in further damage or safety hazards.

Safe DIY Furnace Repairs

Here are a few simple and safe tasks you can handle:

Replacing air filters: Dirty filters restrict airflow and reduce furnace efficiency.
Checking the thermostat: Ensure it’s set to “Heat” and the temperature is appropriate.
Resetting the system: Sometimes, a furnace needs a reset to resolve minor glitches.
Cleaning around the unit: Remove dust and debris near the furnace to prevent airflow blockages.

Repairs Best Left to Professionals

For complex issues such as electrical problems, gas leaks, or a malfunctioning heat exchanger, call a licensed HVAC technician. These repairs require specialized tools and expertise to ensure safety and compliance with local codes.

DIY Furnace Repair: Step-by-Step Instructions for Simple Fixes

If you’re dealing with minor furnace issues, follow these steps to address them safely:

1. Replace the Air Filter

A clogged air filter is a common cause of furnace inefficiency. To replace your furnace filter:

Turn off the furnace.
Locate the air filter, usually near the blower compartment.
Slide out the old filter and inspect it for dirt and debris.
Insert a new filter with the arrows pointing toward the furnace.
Turn the furnace back on.

2. Check the Thermostat

If the furnace isn’t running, the thermostat may be the culprit.

Verify that the thermostat is set to “Heat.”
Adjust the temperature setting to a few degrees higher than the current room temperature.
Replace the thermostat batteries if necessary.
Clean the thermostat’s interior gently with a soft brush.

3. Reset the Furnace

A simple reset can resolve some minor issues.

Turn off the power to the furnace.
Wait 30 seconds, then turn the power back on.
Locate the reset button (check the manual if needed) and press it.
If the furnace doesn’t restart, consult a professional.

4. Inspect the Pilot Light

For older gas furnaces, a pilot light that’s out can be an issue.

Turn off the gas supply.
Wait five minutes to ensure there’s no lingering gas.
Use a long lighter to relight the pilot following the manufacturer’s instructions.
If the pilot won’t stay lit, the thermocouple may need replacement by a technician.

Safety Tips for DIY Furnace Repair

If you plan to perform any of the above DIY furnace repair tasks, be sure to follow these important safety precautions.

Turn Off Power and Gas: Always disconnect power and shut off the gas supply before working on your furnace.
Use Proper Tools: Use appropriate tools for the job to prevent damage or injury.
Follow the Manual: Refer to your furnace’s user manual for specific instructions.
Know Your Limits: If you’re unsure about a repair, it’s safer to call a professional.

Why Professional Repairs Are Sometimes Necessary

While DIY furnace repair can save time and money for simple tasks, certain repairs demand professional attention. In fact, in many cases instead of saving DIY repairs can actually increase your total furnace repair cost, as repairs have to be completed multiple times to ensure a successful fix. Professional repair has several key benefits:

Complex Diagnostics: Trained technicians can identify hidden issues you might overlook.
Warranty Concerns: Attempting repairs on a furnace under warranty could void the coverage.
Safety Risks: Professionals ensure repairs comply with safety standards, especially for gas or electrical components.

Frequently Asked Questions About DIY Furnace Repair

Can I repair a gas furnace myself?

Simple tasks like filter replacement or thermostat adjustments are safe, but gas-related repairs should always be handled by professionals.

How often should I replace my furnace filter?

Replace the filter every 1-3 months, depending on usage and filter type.

What should I do if my furnace makes strange noises?

Unusual sounds often indicate mechanical issues. Turn off the furnace and call a professional for an inspection.

Is it worth attempting DIY repairs on an old furnace?

For furnaces nearing the end of their lifespan (15-20 years), professional repairs or replacement is often more cost-effective.

Contact Galmiche & Sons for Expert Furnace Repair in St. Louis

While DIY furnace repair is an option for minor issues, Galmiche & Sons is here for the rest. Serving St. Louis for over 70 years, we provide reliable and affordable furnace repair services. Our experienced technicians ensure your furnace operates safely and efficiently, giving you peace of mind during the colder months.

Contact us today to schedule a service appointment or learn more about our heating and air conditioning solutions. Let Galmiche & Sons be your trusted partner for all your furnace needs!